Inconsistent gear box? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

wootwoot · 10-06-2013, 03:05 PM

I have installed a kartboy short shifter, whiteline trans insert, kartboy rear shifter bushing, whiteline diff and cradle inserts, and whiteline sub frame inserts. I have also changed the stock fill for petosin.

When my gear box wants to, it shifts beautifully. But the buttery smooth shifts are intermittent and mixed with notchy an less positive shifts. I can't really make any sense of it... Maybe fluid? Or maybe I need to stiffen up my motor mounts at this point? Any advice to make it shift more consistently?

JustBoostin · 10-06-2013, 03:19 PM

I would opt for MTEC shifter springs personally. I've heard a lot of great things about them!

wootwoot · 10-06-2013, 03:40 PM

I have them but haven't installed yet....

JustBoostin · 10-06-2013, 04:42 PM

Same lol, local 86er's here say it made a massive difference.

Turdinator · 10-06-2013, 09:53 PM

Is it just notchy when cold or potentially any time?

wootwoot · 10-06-2013, 10:23 PM

Any time.... Even within a few shifts it will go to one extreme or the other...

lickitysplit · 10-07-2013, 11:16 AM

I've come to find if I am too gentle with the shift, it has more problems. Dunno is thats the case for you and you don't realize it or not. But just watch the next time it happens if you are being too gentle when it does

empower-auto · 10-07-2013, 01:32 PM

You know how sometimes the shift produces a clunk in the rear, but not always? It may be related to that. The gears also feel different warm vs cold.

brn12345 · 10-07-2013, 01:48 PM

Fully a agree with OP. Totally stock car here and the shifts are either buttery smooth or notchy. Doesn't matter if hot or cold.

husker741 · 10-07-2013, 01:51 PM

Quote:

Originally Posted by lickitysplit

I've come to find if I am too gentle with the shift, it has more problems. Dunno is thats the case for you and you don't realize it or not. But just watch the next time it happens if you are being too gentle when it does

Yes! Being too gentle makes it more clunkly. You'd think the opposite.

slofrs · 10-07-2013, 01:59 PM

Quote:

Originally Posted by husker741

Yes! Being too gentle makes it more clunkly. You'd think the opposite.

i agree... if i try to granny it i get a little grind/clunk but if i try to snatch the shifter out of the floor @ 7k it shifts great!

husker741 · 10-07-2013, 02:03 PM

Quote:

Originally Posted by slofrs

i agree... if i try to granny it i get a little grind/clunk but if i try to snatch the shifter out of the floor @ 7k it shifts great!

Hopefully the cops will understand that. "While performing my Italian tune up on the interstate, I need to shift at redline to keep my transmission healthy, officer."

empower-auto · 10-07-2013, 02:15 PM

I changed my tranny fluid and I don't shift like a 16 year old .... no issues ever. Only notchy when cold. 1-2 shift is sort of brutal but it's the same when driving hard in my Soarer with an R-154.

10-06-2013, 03:05 PM	#1
wootwoot Senior Member Join Date: Jul 2012 Drives: FRS Location: Cali Posts: 1,558 Thanks: 188 Thanked 461 Times in 264 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	Inconsistent gear box? I have installed a kartboy short shifter, whiteline trans insert, kartboy rear shifter bushing, whiteline diff and cradle inserts, and whiteline sub frame inserts. I have also changed the stock fill for petosin. When my gear box wants to, it shifts beautifully. But the buttery smooth shifts are intermittent and mixed with notchy an less positive shifts. I can't really make any sense of it... Maybe fluid? Or maybe I need to stiffen up my motor mounts at this point? Any advice to make it shift more consistently?

10-07-2013, 01:32 PM	#8
empower-auto Kouki-Monster Join Date: May 2012 Drives: 2013 Scion FR-S Location: Saskatoon, SK Posts: 1,137 Thanks: 11 Thanked 562 Times in 261 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	You know how sometimes the shift produces a clunk in the rear, but not always? It may be related to that. The gears also feel different warm vs cold. __________________ Rich Anderson EMPOWER AUTO

10-07-2013, 02:15 PM	#13
empower-auto Kouki-Monster Join Date: May 2012 Drives: 2013 Scion FR-S Location: Saskatoon, SK Posts: 1,137 Thanks: 11 Thanked 562 Times in 261 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	I changed my tranny fluid and I don't shift like a 16 year old .... no issues ever. Only notchy when cold. 1-2 shift is sort of brutal but it's the same when driving hard in my Soarer with an R-154. __________________ Rich Anderson EMPOWER AUTO

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10-06-2013, 03:19 PM	#2
JustBoostin Member Join Date: Mar 2013 Drives: Asphalt FR-S 6MT Location: Ft Sask, AB Posts: 82 Thanks: 448 Thanked 55 Times in 27 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	I would opt for MTEC shifter springs personally. I've heard a lot of great things about them!

10-06-2013, 03:40 PM	#3
wootwoot Senior Member Join Date: Jul 2012 Drives: FRS Location: Cali Posts: 1,558 Thanks: 188 Thanked 461 Times in 264 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	I have them but haven't installed yet....

10-06-2013, 04:42 PM	#4
JustBoostin Member Join Date: Mar 2013 Drives: Asphalt FR-S 6MT Location: Ft Sask, AB Posts: 82 Thanks: 448 Thanked 55 Times in 27 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	Same lol, local 86er's here say it made a massive difference.

10-06-2013, 10:23 PM	#6
wootwoot Senior Member Join Date: Jul 2012 Drives: FRS Location: Cali Posts: 1,558 Thanks: 188 Thanked 461 Times in 264 Posts Mentioned: 9 Post(s) Tagged: 0 Thread(s)	Any time.... Even within a few shifts it will go to one extreme or the other...

10-07-2013, 11:16 AM	#7
lickitysplit Don't care Join Date: Aug 2013 Drives: 2013 Whiteout FRS Location: Texas Posts: 233 Thanks: 3 Thanked 62 Times in 48 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	I've come to find if I am too gentle with the shift, it has more problems. Dunno is thats the case for you and you don't realize it or not. But just watch the next time it happens if you are being too gentle when it does

10-07-2013, 01:48 PM	#9
brn12345 Senior Member Join Date: Oct 2012 Drives: BRZ Location: Bahrain Posts: 254 Thanks: 101 Thanked 137 Times in 63 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	Fully a agree with OP. Totally stock car here and the shifts are either buttery smooth or notchy. Doesn't matter if hot or cold.

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